// © 2016 and later: Unicode, Inc. and others.
// License & terms of use: http://www.unicode.org/copyright.html#License
/*
 *******************************************************************************
 * Copyright (C) 1996-2016, Google, International Business Machines Corporation and
 * others. All Rights Reserved.                                                *
 *******************************************************************************
 */
package com.ibm.icu.dev.test.format;

import java.text.AttributedCharacterIterator;
import java.text.CharacterIterator;
import java.text.FieldPosition;
import java.util.Collection;
import java.util.HashMap;
import java.util.LinkedHashSet;
import java.util.Locale;
import java.util.Map;

import org.junit.Ignore;
import org.junit.Test;

import com.ibm.icu.dev.test.TestFmwk;
import com.ibm.icu.text.CompactDecimalFormat;
import com.ibm.icu.text.CompactDecimalFormat.CompactStyle;
import com.ibm.icu.text.DecimalFormatSymbols;
import com.ibm.icu.text.NumberFormat;
import com.ibm.icu.text.PluralRules;
import com.ibm.icu.util.Currency;
import com.ibm.icu.util.CurrencyAmount;
import com.ibm.icu.util.ULocale;

public class CompactDecimalFormatTest extends TestFmwk {
    Object[][] EnglishTestData = {
            // default is 2 digits of accuracy
            {0.0d, "0"},
            {0.01d, "0.01"},
            {0.1d, "0.1"},
            {1d, "1"},
            {12, "12"},
            {123, "120"},
            {1234, "1.2K"},
            {1000, "1K"},
            {1049, "1K"},
            {12345, "12K"},
            {123456, "120K"},
            {1234567, "1.2M"},
            {12345678, "12M"},
            {123456789, "120M"},
            {1234567890, "1.2B"},
            {12345678901f, "12B"},
            {123456789012f, "120B"},
            {1234567890123f, "1.2T"},
            {12345678901234f, "12T"},
            {123456789012345f, "120T"},
            {12345678901234567890f, "12000000T"},
    };

    Object[][] SerbianTestDataShort = {
            {1234, "1,2\u00A0\u0445\u0438\u0459."},
            {12345, "12\u00a0хиљ."},
            {20789, "21\u00a0хиљ."},
            {123456, "120\u00a0хиљ."},
            {1234567, "1,2\u00a0мил."},
            {12345678, "12\u00a0мил."},
            {123456789, "120\u00a0мил."},
            {1234567890, "1,2\u00a0млрд."},
            {12345678901f, "12\u00a0млрд."},
            {123456789012f, "120\u00a0млрд."},
            {1234567890123f, "1,2\u00a0бил."},
            {12345678901234f, "12\u00a0бил."},
            {123456789012345f, "120\u00a0бил."},
            {1234567890123456f, "1200\u00a0бил."},
    };

    Object[][] SerbianTestDataLong = {
            {1234, "1,2 хиљаде"},
            {12345, "12 хиљада"},
            {21789, "22 хиљаде"},
            {123456, "120 хиљада"},
            {999999, "1 милион"},
            {1234567, "1,2 милиона"},
            {12345678, "12 милиона"},
            {123456789, "120 милиона"},
            {1234567890, "1,2 милијарде"},
            {12345678901f, "12 милијарди"},
            {20890123456f, "21 милијарда"},
            {21890123456f, "22 милијарде"},
            {123456789012f, "120 милијарди"},
            {1234567890123f, "1,2 трилиона"},
            {12345678901234f, "12 трилиона"},
            {123456789012345f, "120 трилиона"},
            {1234567890123456f, "1.200 трилиона"},
    };

    Object[][] SerbianTestDataLongNegative = {
            {-1234, "-1,2 хиљаде"},
            {-12345, "-12 хиљада"},
            {-21789, "-22 хиљаде"},
            {-123456, "-120 хиљада"},
            {-999999, "-1 милион"},
            {-1234567, "-1,2 милиона"},
            {-12345678, "-12 милиона"},
            {-123456789, "-120 милиона"},
            {-1234567890, "-1,2 милијарде"},
            {-12345678901f, "-12 милијарди"},
            {-20890123456f, "-21 милијарда"},
            {-21890123456f, "-22 милијарде"},
            {-123456789012f, "-120 милијарди"},
            {-1234567890123f, "-1,2 трилиона"},
            {-12345678901234f, "-12 трилиона"},
            {-123456789012345f, "-120 трилиона"},
            {-1234567890123456f, "-1.200 трилиона"},
    };

    Object[][] JapaneseTestData = {
            {1234f, "1200"},
            {12345f, "1.2万"},
            {123456f, "12万"},
            {1234567f, "120万"},
            {12345678f, "1200万"},
            {123456789f, "1.2億"},
            {1234567890f, "12億"},
            {12345678901f, "120億"},
            {123456789012f, "1200億"},
            {1234567890123f, "1.2兆"},
            {12345678901234f, "12兆"},
            {123456789012345f, "120兆"},
    };

    Object[][] ChineseCurrencyTestData = {
            // The first one should really have a ￥ in front, but the CLDR data is 
            // incorrect.  See http://unicode.org/cldr/trac/ticket/9298 and update
            // this test case when the CLDR ticket is fixed.
            {new CurrencyAmount(1234f, Currency.getInstance("CNY")), "1200"},
            {new CurrencyAmount(12345f, Currency.getInstance("CNY")), "￥1.2万"},
            {new CurrencyAmount(123456f, Currency.getInstance("CNY")), "￥12万"},
            {new CurrencyAmount(1234567f, Currency.getInstance("CNY")), "￥120万"},
            {new CurrencyAmount(12345678f, Currency.getInstance("CNY")), "￥1200万"},
            {new CurrencyAmount(123456789f, Currency.getInstance("CNY")), "￥1.2亿"},
            {new CurrencyAmount(1234567890f, Currency.getInstance("CNY")), "￥12亿"},
            {new CurrencyAmount(12345678901f, Currency.getInstance("CNY")), "￥120亿"},
            {new CurrencyAmount(123456789012f, Currency.getInstance("CNY")), "￥1200亿"},
            {new CurrencyAmount(1234567890123f, Currency.getInstance("CNY")), "￥1.2兆"},
            {new CurrencyAmount(12345678901234f, Currency.getInstance("CNY")), "￥12兆"},
            {new CurrencyAmount(123456789012345f, Currency.getInstance("CNY")), "￥120兆"},
    };
    Object[][] GermanCurrencyTestData = {
            {new CurrencyAmount(1234f, Currency.getInstance("EUR")), "1,2 Tsd. €"},
            {new CurrencyAmount(12345f, Currency.getInstance("EUR")), "12 Tsd. €"},
            {new CurrencyAmount(123456f, Currency.getInstance("EUR")), "120 Tsd. €"},
            {new CurrencyAmount(1234567f, Currency.getInstance("EUR")), "1,2 Mio. €"},
            {new CurrencyAmount(12345678f, Currency.getInstance("EUR")), "12 Mio. €"},
            {new CurrencyAmount(123456789f, Currency.getInstance("EUR")), "120 Mio. €"},
            {new CurrencyAmount(1234567890f, Currency.getInstance("EUR")), "1,2 Mrd. €"},
            {new CurrencyAmount(12345678901f, Currency.getInstance("EUR")), "12 Mrd. €"},
            {new CurrencyAmount(123456789012f, Currency.getInstance("EUR")), "120 Mrd. €"},
            {new CurrencyAmount(1234567890123f, Currency.getInstance("EUR")), "1,2 Bio. €"},
            {new CurrencyAmount(12345678901234f, Currency.getInstance("EUR")), "12 Bio. €"},
            {new CurrencyAmount(123456789012345f, Currency.getInstance("EUR")), "120 Bio. €"},
    };
    Object[][] EnglishCurrencyTestData = {
            {new CurrencyAmount(1234f, Currency.getInstance("USD")), "$1.2K"},
            {new CurrencyAmount(12345f, Currency.getInstance("USD")), "$12K"},
            {new CurrencyAmount(123456f, Currency.getInstance("USD")), "$120K"},
            {new CurrencyAmount(1234567f, Currency.getInstance("USD")), "$1.2M"},
            {new CurrencyAmount(12345678f, Currency.getInstance("USD")), "$12M"},
            {new CurrencyAmount(123456789f, Currency.getInstance("USD")), "$120M"},
            {new CurrencyAmount(1234567890f, Currency.getInstance("USD")), "$1.2B"},
            {new CurrencyAmount(12345678901f, Currency.getInstance("USD")), "$12B"},
            {new CurrencyAmount(123456789012f, Currency.getInstance("USD")), "$120B"},
            {new CurrencyAmount(1234567890123f, Currency.getInstance("USD")), "$1.2T"},
            {new CurrencyAmount(12345678901234f, Currency.getInstance("USD")), "$12T"},
            {new CurrencyAmount(123456789012345f, Currency.getInstance("USD")), "$120T"},
    };

    Object[][] SwahiliTestData = {
            {1234f, "elfu\u00a01.2"},
            {12345f, "elfu\u00a012"},
            {123456f, "elfu\u00A0120"},
            {1234567f, "M1.2"},
            {12345678f, "M12"},
            {123456789f, "M120"},
            {1234567890f, "B1.2"},
            {12345678901f, "B12"},
            {123456789012f, "B120"},
            {1234567890123f, "T1.2"},
            {12345678901234f, "T12"},
            {12345678901234567890f, "T12000000"},
    };

    Object[][] CsTestDataShort = {
            {1000, "1\u00a0tis."},
            {1500, "1,5\u00a0tis."},
            {5000, "5\u00a0tis."},
            {23000, "23\u00a0tis."},
            {127123, "130\u00a0tis."},
            {1271234, "1,3\u00a0mil."},
            {12712345, "13\u00a0mil."},
            {127123456, "130\u00a0mil."},
            {1271234567f, "1,3\u00a0mld."},
            {12712345678f, "13\u00a0mld."},
            {127123456789f, "130\u00a0mld."},
            {1271234567890f, "1,3\u00a0bil."},
            {12712345678901f, "13\u00a0bil."},
            {127123456789012f, "130\u00a0bil."},
    };

    Object[][] SkTestDataLong = {
            {1000, "1 tis\u00edc"},
            {1572, "1,6 tis\u00edca"},
            {5184, "5,2 tis\u00edca"},
    };

    Object[][] SwahiliTestDataNegative = {
            {-1234f, "elfu\u00a0-1.2"},
            {-12345f, "elfu\u00a0-12"},
            {-123456f, "elfu\u00A0-120"},
            {-1234567f, "M-1.2"},
            {-12345678f, "M-12"},
            {-123456789f, "M-120"},
            {-1234567890f, "B-1.2"},
            {-12345678901f, "B-12"},
            {-123456789012f, "B-120"},
            {-1234567890123f, "T-1.2"},
            {-12345678901234f, "T-12"},
            {-12345678901234567890f, "T-12000000"},
    };

    Object[][] TestACoreCompactFormatList = {
            {1000, "1K"},
            {1100, "1,1K"},
            {1200, "1,2Ks"},
            {2000, "2Ks"},
    };

    Object[][] TestACoreCompactFormatListCurrency = {
            {1000, "1K$"},
            {1100, "1,1K$"},
            {1200, "1,2Ks$s"},
            {2000, "2Ks$s"},
    };

    @Test
    public void TestACoreCompactFormat() {
        Map<String,String[][]> affixes = new HashMap();
        affixes.put("one", new String[][] {
                {"","",}, {"","",}, {"","",}, 
                {"","K"}, {"","K"}, {"","K"},
                {"","M"}, {"","M"}, {"","M"},
                {"","B"}, {"","B"}, {"","B"}, 
                {"","T"}, {"","T"}, {"","T"}, 
        });
        affixes.put("other", new String[][] {
                {"","",}, {"","",}, {"","",}, 
                {"","Ks"}, {"","Ks"}, {"","Ks"},
                {"","Ms"}, {"","Ms"}, {"","Ms"},
                {"","Bs"}, {"","Bs"}, {"","Bs"}, 
                {"","Ts"}, {"","Ts"}, {"","Ts"}, 
        });

        Map<String,String[]> currencyAffixes = new HashMap();
        currencyAffixes.put("one", new String[] {"", "$"});
        currencyAffixes.put("other", new String[] {"", "$s"});

        long[] divisors = new long[] {
                0,0,0, 
                1000, 1000, 1000, 
                1000000, 1000000, 1000000, 
                1000000000L, 1000000000L, 1000000000L, 
                1000000000000L, 1000000000000L, 1000000000000L};
        checkCore(affixes, null, divisors, TestACoreCompactFormatList);
        checkCore(affixes, currencyAffixes, divisors, TestACoreCompactFormatListCurrency);
    }

    private void checkCore(Map<String, String[][]> affixes, Map<String, String[]> currencyAffixes, long[] divisors, Object[][] testItems) {
        Collection<String> debugCreationErrors = new LinkedHashSet();
        CompactDecimalFormat cdf = new CompactDecimalFormat(
                "#,###.00", 
                DecimalFormatSymbols.getInstance(new ULocale("fr")),
                CompactStyle.SHORT, PluralRules.createRules("one: j is 1 or f is 1"),
                divisors, affixes, currencyAffixes,
                debugCreationErrors
                );
        if (debugCreationErrors.size() != 0) {
            for (String s : debugCreationErrors) {
                errln("Creation error: " + s);
            }
        } else {
            checkCdf("special cdf ", cdf, testItems);
        }
    }

    @Test
    public void TestDefaultSignificantDigits() {
        // We are expecting two significant digits as default.
        CompactDecimalFormat cdf =
                CompactDecimalFormat.getInstance(ULocale.ENGLISH, CompactStyle.SHORT);
        assertEquals("Default significant digits", "12K", cdf.format(12345));
        assertEquals("Default significant digits", "1.2K", cdf.format(1234));
        assertEquals("Default significant digits", "120", cdf.format(123));
    }

    @Test
    public void TestCharacterIterator() {
        CompactDecimalFormat cdf =
                getCDFInstance(ULocale.forLanguageTag("sw"), CompactStyle.SHORT);
        AttributedCharacterIterator iter = cdf.formatToCharacterIterator(1234567);
        assertEquals("CharacterIterator", "M1.2", iterToString(iter));
        iter = cdf.formatToCharacterIterator(1234567);
        iter.setIndex(1);
        assertEquals("Attributes", NumberFormat.Field.INTEGER, iter.getAttribute(NumberFormat.Field.INTEGER));
        assertEquals("Attributes", 1, iter.getRunStart());
        assertEquals("Attributes", 2, iter.getRunLimit());
    }

    @Test
    public void TestEnglishShort() {
        checkLocale(ULocale.ENGLISH, CompactStyle.SHORT, EnglishTestData);
    }

    // JCE: 2016-02-26: This test is logKnownIssue because CompactDecimalFormat cannot properly format
    // negative quantities until we implement support for positive/negative subpatterns within CDF.
    // So, in the meantime, we are making any format of a negative throw an UnsupportedOperationException
    // as the original JavaDoc states.

    @Test
    @Ignore
    public void TestArabicLongStyle() {
        if (logKnownIssue("12181","No support for negative numbers in CDF")) {
            return;
        }
        NumberFormat cdf =
                CompactDecimalFormat.getInstance(new Locale("ar"), CompactStyle.LONG);
        assertEquals("Arabic Long", "\u200F-\u0665\u066B\u0663 \u0623\u0644\u0641", cdf.format(-5300));
    }

    @Test
    public void TestCsShort() {
        checkLocale(ULocale.forLanguageTag("cs"), CompactStyle.SHORT, CsTestDataShort);
    }

    @Test
    public void TestSkLong() {
        checkLocale(ULocale.forLanguageTag("sk"), CompactStyle.LONG, SkTestDataLong);
    }

    @Test
    public void TestSerbianShort() {
        checkLocale(ULocale.forLanguageTag("sr"), CompactStyle.SHORT, SerbianTestDataShort);
    }

    @Test
    public void TestSerbianLong() {
        checkLocale(ULocale.forLanguageTag("sr"), CompactStyle.LONG, SerbianTestDataLong);
    }

// JCE: 2016-02-26: This test is logKnownIssue because CompactDecimalFormat cannot properly format
// negative quantities until we implement support for positive/negative subpatterns within CDF.
// So, in the meantime, we are making any format of a negative throw an UnsupportedOperationException
// as the original JavaDoc states.
//
    @Test
    @Ignore
    public void TestSerbianLongNegative() {
        if (logKnownIssue("12181","No support for negative numbers in CDF")) {
            return;
        }
        checkLocale(ULocale.forLanguageTag("sr"), CompactStyle.LONG, SerbianTestDataLongNegative);
    }

    @Test
    public void TestJapaneseShort() {
        checkLocale(ULocale.JAPANESE, CompactStyle.SHORT, JapaneseTestData);
    }

    @Test
    public void TestSwahiliShort() {
        checkLocale(ULocale.forLanguageTag("sw"), CompactStyle.SHORT, SwahiliTestData);
    }
    
// JCE: 2016-02-26: This test is logKnownIssue because CompactDecimalFormat cannot properly format
// negative quantities until we implement support for positive/negative subpatterns within CDF.
// So, in the meantime, we are making any format of a negative throw an UnsupportedOperationException
// as the original JavaDoc states.
//
    @Test
    @Ignore
    public void TestSwahiliShortNegative() {
        if (logKnownIssue("12181","No support for negative numbers in CDF")) {
            return;
        }
        checkLocale(ULocale.forLanguageTag("sw"), CompactStyle.SHORT, SwahiliTestDataNegative);
    }

    @Test
    public void TestEnglishCurrency() {
        checkLocale(ULocale.ENGLISH, CompactStyle.SHORT, EnglishCurrencyTestData);
    }
    
    @Test
    public void TestGermanCurrency() {
        checkLocale(ULocale.GERMAN, CompactStyle.SHORT, GermanCurrencyTestData);
    }
    
    @Test
    public void TestChineseCurrency() {
        checkLocale(ULocale.CHINESE, CompactStyle.SHORT, ChineseCurrencyTestData);
    }

    @Test
    public void TestFieldPosition() {
        CompactDecimalFormat cdf = getCDFInstance(
                ULocale.forLanguageTag("sw"), CompactStyle.SHORT);
        FieldPosition fp = new FieldPosition(0);
        StringBuffer sb = new StringBuffer();
        cdf.format(1234567f, sb, fp);
        assertEquals("fp string", "M1.2", sb.toString());
        assertEquals("fp start", 1, fp.getBeginIndex());
        assertEquals("fp end", 2, fp.getEndIndex());
    }

    @Test
    public void TestEquals() {
        CompactDecimalFormat cdf = CompactDecimalFormat.getInstance(
                ULocale.forLanguageTag("sw"), CompactStyle.SHORT);
        CompactDecimalFormat equalsCdf = CompactDecimalFormat.getInstance(
                ULocale.forLanguageTag("sw"), CompactStyle.SHORT);
        CompactDecimalFormat notEqualsCdf = CompactDecimalFormat.getInstance(
                ULocale.forLanguageTag("sw"), CompactStyle.LONG);
        assertEquals("equals", cdf, equalsCdf);
        assertNotEquals("not equals", cdf, notEqualsCdf);

    }

    public void checkLocale(ULocale locale, CompactStyle style, Object[][] testData) {
        CompactDecimalFormat cdf = getCDFInstance(locale, style);
        checkCdf(locale + " (" + locale.getDisplayName(locale) + ") for ", cdf, testData);
    }

    private void checkCdf(String title, CompactDecimalFormat cdf, Object[][] testData) {
        for (Object[] row : testData) {
            Object source = row[0];
            Object expected = row[1];
            assertEquals(title + source, expected, 
                    cdf.format(source));
        }
    }

    private static String iterToString(CharacterIterator iter) {
        StringBuilder builder = new StringBuilder();
        for (char c = iter.current(); c != CharacterIterator.DONE; c = iter.next()) {
            builder.append(c);
        }
        return builder.toString();
    }

    private static CompactDecimalFormat getCDFInstance(ULocale locale, CompactStyle style) {
        CompactDecimalFormat result = CompactDecimalFormat.getInstance(locale, style);
        // Our tests are written for two significant digits. We set explicitly here
        // because default significant digits may change.
        result.setMaximumSignificantDigits(2);
        return result;
    }

    @Test
    public void TestNordic() {
        if (logKnownIssue("cldrbug:9465","CDF(12,000) for no_NO shouldn't be 12 (12K or similar)")) {
            return;
        }
        String result = CompactDecimalFormat.getInstance( new ULocale("no_NO"),
                CompactDecimalFormat.CompactStyle.SHORT ).format(12000);
        assertNotEquals("CDF(12,000) for no_NO shouldn't be 12 (12K or similar)", "12", result);
    }
}